Yes! The loose guidelines are:
-post what you're crowdfunding for
-how much it costs
-your totals so far (so like, I generally poat weekly and it's "last week I raised $x, plus the previous weeks' $x, = $x toward my goal which means I have $x left to go!"
-show off when you reach a goal somehow so people can celebrate with you/know you're legit

Also, tag it #upfundme and #crowdfund (the second tag so people can find the actual fundraising projects amid the general posts).