We were going to write a post about how often you should make a clean sweep of your computer—you know, purge old files and run the necessary updates. But once we dove into the research, we realized there isn't one hard fast guideline. Instead, we want to hear how often you make a clean sweep of your smart devices. (And if your answer is "never," we've got some tips on deciding what to purge.)

It's easy for devices—everything from smart phones to computers— to get cluttered up with digital stuff, especially if there's kids (or a kid-like significant other) constantly downloading new movies, games and music. And all the experts agree that a clean sweep of your smart tech is a good idea for long-term maintenance, to be sure.
But when it comes to figuring out how often it should happen, each expert gives different advice. The answers vary across the board from once a month to once a year, with some guys saying it's only necessary when things start to run slow.
We want to know, readers: How often do you wipe files from your laptop? Your smart phone? How about your game console?
Since the process is pretty simple, we think it's best to err on the side of caution and put "clean sweep" on your to-do list at least once every few months. The hardest part is just deciding what to purge:
- Get rid of any programs and files you can't or won't ever use. No need to become a digital version of Hoarders.
- If you still have the installation disks for games and programs that you haven't played in a year, it's OK to get rid of them. You can re-install in another year if you need to.
- Burn never-played MP3 files to CDs and wipe them from your hard drive. The same goes for pictures and movies; move them to external storage (like an external hard drive) and purge 'em for now.
(Images: Flickr user the tartanpodcast under license from Creative Commons, Flickr user rebeca :) under license from Creative Commons)

White Enamel Flatwa...
I have a Windows laptop that I format and start over from scratch at least twice per year.
once a year on most of my macs and iphones. it promotes cleaning up old ish and making sure i have a good yearly backup of important files....
to the cloud.
I back up all my files about every 4-6 months. That's when I start sweeping for other old stuff. I'm pretty OCD about it, though.
Every week. I have CCleaner set to automatically run silently every Sunday night. I never notice my clean ups. Allows me to never really format my Windows laptop. Haven't had to for a couple years, running nice and quick still.
I have an IBM Thinkpad 500 purchased clearance NOV 1994 [$1000] 4 + 4 expansoon card mb ram, 170mb hard drive, runs both ram doubler and hard drive compression to get everything I could out of it. It boots into DOS first with the old Menu sofware; starting Win is one of the menu items. The CMOS battery is dead, the main battery does not hold a charge but that does not stop one from booting up and continuing. It runs WIN 3.1 and I upgraded it from PC DOS 6.3 to PC DOS 7 in 1999. Otherwise it runs just the same as when new and when I put in storage. I use WIN 7 64 bit on a 2009 Lenovo Thinkpad and a 2010 desktop. I had issues with a Win 95 IBM Aptiva I gave away long time back and did format and reinstall more than once, but also had made other hardware upgrades inside. I do not expect to "re do" the hard drives on any PC I have now. Please, just keep them 'tuned up'.
Save files if you wish. Keep some overhead on the hard drive though! Adding a 2nd large drive for your growing data with current SATA drives in desktops is really easy. So keep some of the old software especially where you do not need a disc and can be saved on your hard drive. No room here to explain a lot more except some software has to be seriously reinstalled in new machines and re registered etc. and some old school stuff can almost literally thrown and and run or else additionally run the software install right over it then it will be OK in a new PC and current Windows. My email and newsreader software originally date from shareware [and so does one old graphics viewer I still use to open pics fast] mid 1990s and upgraded along the way many times keeping ALL old data with it - still saved a few messages from back then that show at the bottom of LONG list.