Yea, a mod has to give you the permission though, so contact a mod. And only one giveaway can be done a day
Here are the rules for daily give aways http://www.neofriends.net/daily-giveaway-f25/daily-giveaway-rules-t11611.html
.... Read what's in there.. We appreciate it when people help out, by running the giveaway themselves. If you run a giveaway, you must give away an item (or NP) worth a minimum of 10,000 NP. Giveaways normally range between 10,000 and 200,000 NP. For special occasions, there are sometimes large giveaways, with value of up to or over a million NP. You receive the 'Giveaway' award if you run at least one giveaway. If you would like to run a giveaway, go to your user control panel - ucp.php?i=167 and make a request to join the 'Giveaway Access' group. A moderator will then need to approve your request before you are able to run giveaways
As for normal random giveaways > by all means go for gold. It's be better to run a competition and award them as prizes but a general giveaway won't hurt
As Junior said, I think you should either do a daily giveaway, or run a competition by yourself and then give to a user. But thier shouldnt be like 10 giveaways daily