vBulletin has a class that does memory caching, is this really a good idea, because if so, I'd like to do it. ;)

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VillageIdiot can have my babbies ;d

Yes indeed it is, speeds up things alot if your script is heavy on queries. You need to think a bit of how you'll do the caching before you go about writing the code ( as with anything else )

I've been dying to learn this. where do I figure out how to cache it?

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VillageIdiot can have my babbies ;d

Read up on Memcache add look at example scripts.

Memory cache class isn't on my remote server. fff, local server it is then....

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VillageIdiot can have my babbies ;d