It is currently in open beta, until I get the server I've rented set up. I will certainly make it evolve based on the feedback received so feel free to criticize it.
I've written a FAQ (even though I know none of these questions have been asked already), and I'll be glad to answer your other questions in this thread or by IM.
Of course it is not totally finished so please report any problem or error you might encounter to me

Oh, there is a group SLHotPop which is free to join should you want a regular chat about it.
SLHOTPOP FAQ
What is SLHotPop?
SLHotPop is a free search engine designed for places in Second Life. It provides search facilities, based on
land keywords, votes, surveys, lag and total donations. Each places are listed with a SLURL link which allow the residents to teleport there.
Where is it?
You can access the beta version here: http://www.slhotpop.com/infoparcels.php5
What is the SLHotPop board for?
The board is used to register and unregister your lands, add more keywords for the search engine,
allows residents to vote for and survey your land, and also works as a tipjar
How do I get the board?
You can get it for free at Twisted Designs Main Shop in Ceilostomo
What if I don't want surveys or votes for my land?
You can disable it in the options
What are the survey criterias?
Actually Overall,Crowd,Camping,Friendly,Music,Design,Shop. It is subject to change based on feedback.
Is Camping considered good or bad?
I have my opinion but it doesn't matter here. The survey only asks how many campers do you see around.
Do I have to pay residents for votes or survey?
No, it's your choice if you want to reward them for votes and surveys.
I would recommend to disable payments until you are familiar with the system.
"Rewarding" for surveys or votes is another way of camping...
Not really. It takes thought to answer a survey. Also you don't control if the survey anwers will be positive or negative.
Also it just takes a few minutes to answer a survey.
Won't people just vote or answer surveys over and over to get more money?
Surveys and votes are limited. Only one survey ever and one vote every 24 hours.
What is Time Dilation?
It is a measure of lag. The closer to 1 the better it is. I feel it is important that residents know in advance
But I am going to lose all my money if too many residents come vote or survey?
You can set a cash limit until when the board stops paying
I have a tipjar already. Why would I use SLHotPop for tips?
SLHotPop tipjar lets you share your tips with Twisted Pharaoh.
Why would I share my tips with Twisted Pharaoh?
The service is entirely free, it will help paying the server bills.
Ok, but is there any benefits to tip sharing?
By default the search engine lists the best donators first. The donations will be reset every week.
How do I add more keywords to my land?
Place them in the description of the SLHotPop board, up to 128 characters
Will my private place be listed on SLHotPop?
No, only the places who drop the SLHotPop board will be listed
Can anyone set a SLHotPop board over my land?
No, to function it will need to be set by the land owner or by a group officer in case of a group land.