The site policy suggests that neither salutations nor thanks are needed in questions. Opinion is divided on this. On a language site I think the issues are slightly different from a scientific site. Recently I was searching for possible duplicates before asking a question about "gracias" and this was made much harder because most of the 300+ hits were questions just thanking in advance. I propose therefore to go through them and edit out the superfluous "gracias". I do not want to flood the front page though so my question is how many the community would think it reasonable to have on the front page at one time. To make it easier to respond I will give some answers with possible numbers so you can vote for your preferred choice.
If the question is in Spanish I suppose I should give the edit reason in Spanish too. I was thinking of "Gracias borrada por que resulta difícil la busqueda de preguntas sobre la palabra gracias" but would welcome corrections.
============== update after seeing comments and answers ==============
It looks like the front page usually has about five days worth of threads so to avoid over-loading it probably one or two a day is the maximum to do. I have deleted the specimen answers I provided and added a new one to collect more opinion.