i use ultimate-guitar.com and download the Power Tab program when the chance arises... it's free and it delivers the best tablature ever
It seems that a lot of the tabs are just copies of each other. Almost anywhere I go, I find repeat tabs all over the place. If I find a tab unsatisfactory and go to look somewhere else, I nearly always end up finding the exact same tab. Otherwise, I use to use OLGA, but now i use ultimate-guitar too
i use ultimate guitar also. they have a good forum there and the people there know what they are talking about. that is if you are into the 'proper' way to play guitar.
www.ultimate-guitar.com same here, check the comments before you try the tabs, some of them are way off and you can find that out from others without finding out on your own
Remember MXTabs? They had a huge selection for bass, guitar, and drums. I think they got sued or something, but I miss it.