You can't use "+" in a WikiAnswers question. The only symbols allowed in a question are a period, hyphen, and question mark. Instead, you could use the word plus.
Yes, anyone in the world can write an answer to a question on WikiAnswers. However, if you are not a registered user, you are limited to editing categories, writing the first answer to a question, and asking questions. To be able to edit a question, you must sign into an account.
When you asked question on this site, you will be prompted if you want to be notified once an answer is made available. Please note that, you can always decline the invitation if you are not interested.
When you sign up for WikiAnswers, you are asked to choose your own username and password; you can personalize it from there during the sign-up process.(See the Related question on how to become a member of WikiAnswers.)
Yes, unregistered users can answer questions on WikiAnswers but only registered users are able to edit answers.
It is perfectly safe to sign up for WikiAnswers.
The best way is to sign in (before or after asking your question) and then click to "Watch" it. The Watch link appears in the WikiAnswers Toolbar above on the question page. If you have included an e-mail address with your sign-in you will be e-mailed when the question is answered. If you do not want to receive any e-mail, check back and look on your Watchlist. (Again, this is a link on the WikiAnswers Toolbar.) If you do not want to sign in, you could record the URL (Web address) of your question and check back periodically. If you do not know where your question is, try searching for it. One warning about this: questions can be edited so they may not include the same keywords you originally used or be in the same FAQ(s).
Addition sign or plus signAlthough, the original question worded as "What_is_two_lines_cross_at_90_degrees," could be interpreted to be asking about perpendicular lines.
That is a known issue. The only way to edit questions currently is either from the WikiAnswers homepage (if the question appears there) and from the question homepage.
No, you do not have to be 18 to answer questions on WikiAnswers. In fact, you can be any age and still be allowed to answer a question on WikiAnswers. There is no age limit to sign up for an account and contribute to WikiAnswers, but there is an age limit to join a program.
No, there isn't a subscription fee to join WikiAnswers. All memberships with WikiAnswers are 100% free, no charge whatsoever. It only costs a little bit of your time to sign up and contribute to WikiAnswers, no payment. Plus, you don't 'subscribe' to WikiAnswers - you join the website with a membership.
dumb question like the dumb person asking this question
If a question is clearly spam or vandalism it should be removed. E-mail Wikianswers@answers.com with the question URL or wording. However, unless it's really offensive, you can consider rewording the question instead. First sign in. Then click "Edit question," fix the wording, and click Save.