C Cleaner download http://ccleaner.en.softonic.com/download
Avast download http://download.cnet.com/Avast-Free-Antivirus/3000-2239_4-10019223.html
If you run CCleaner at the end of your session, then all your browsing history, and cookies collected etc are cleaned. If you want to stay logged in, move the cookies you want to keep to the right side of the cookie table. All not moved will be cleaned, so your passwords etc will need to be resubmitted. Registry editor is worth running now and then (press fix all). Drive wiper will protect your privacy by erasing / cleaning all unused space, so those of you who don't want your wife seeing you've been watching Abba might use that lol. Start up programmes are generally accessed by typing msconfig in your search panel after pressing start, but you can do it all via C Cleaner too. I only have Avast running as a start up programme. Everything else makes my pc slower just as having all your electrics on in the house when you only need the tv uses electricity etc.
Flash cookies are different to normal cookies.
http://www.piriform.com/docs/ccleaner/ccleaner-settings/cleaning-flash-cookies
If you want CCleaner to delete flash cookies too, then read the above link / or / go to CCleaner / applications / multimedia and tick the Adobe flash box if not already ticked.
Also, go here: http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html and turn off what you want.
You will see 'tidaltv' cookie in my right side panel in CCleaner cookies. I went to 'ad choice opt out' and downloaded the cookie, then moved it to the right. I've not had the stupid adverts such as you get on Evertontv since.
EBAY is a big culprit.
http://pages.ebay.co.uk/help/account/adchoice.html#will
LOG IN. Go to Account. Hover over and press 'site preferences'.
http://my.ebay.co.uk/ws/eBayISAPI.dll?MyeBay&ssPageName=successAuthorization
Then browse down to general preferences and advertising preferences and edit to no.
Also go here: http://www.bbc.co.uk/bbc.com/ad-choices/ and opt out
Here too: http://www.bbc.co.uk/privacy/cookies/managing/cookie-settings.html
If you then check your cookies, and see the tidaltv one etc, save it to the right.
*please note: I am not a pc expert, and don't know if the tidaltv cookie is something you should keep. It simply worked for me.