Interwebz points (or interwebs points) are an unofficial currency of internet chatrooms and discussion boards. They don't count for anything, but some folks still "collect" them as a badge of honor. Originally used positively as a means of recognizing another's kindness, may also be used sarcastically to highlight another's status as a noob.
Thanks for the awesome vacation suggestion, TheTopDog, +10 interwebz points for you. ASSMUNCH1337, your suggestion sucked, -1,000 interwebz points for you.