I have a few questions to begin with.
1. What's a signature Campaign?
A signature campaign is:
A way for an advertiser to create an incentive for greedy people to fill the forum with thousands of posts of completely useless nonsense. The advertiser offers a small payment in exchange for the user to add the advertiser's ad to the user's signature space. The user is required to create a particular number of posts on the forum so that the advertiser feels that the ad will get noticed. Since the average greedy unknowledgeable user doesn't have enough useful and well thought out things to say to meet the advertiser's quota, they end up just spamming threads all over the forum with useless drivel. Several of the regular forum users have taken to blocking (using the "ignore" link) all users with a signature ad campaign in their signature. Therefore, by participating in such a campaign, you significantly increase the likelihood that helpful and knowledgeable users will never see anything that you post here.
2. How to I successfully do it?
That depends on what you mean by successfully. In my personal opinion, there's no such thing as successfully participating in a signature campaign. The costs are ALWAYS greater than the benefits.
3. Do I need a legendary account to join a signature campaign?
That depends on the campaign. Each advertiser sets their own rules.
4. Is 0.1 btc enough to buy a legendary account?
I have a legendary account. There's no way in heck I'd sell it for as little as 0.1 BTC. My reputation is worth much more to me than that. I might consider selling the account for somewhere around 20997254.7541 BTC though. Let me know if you still want to buy it.
Thanx..
You're welcome.