With information only a keystroke away, it is easy to submit your basic information to get a "Rate Quote Request".  The trouble is you do not get a quote.  What you should expect is 5 to 10 phone calls and/or emails in the next few days.  Your information will probably be sold, nevertheless, you do not get a rate like you expect.  They may promise you the best rates in the world, but keep in mind you or your Realtor will not know anything about them or their company usually.  Simple fact:  Use the mortgage source your Realtor recommends.  This will save you time and efforts in the long run.  I worked with a client this morning that had done this in an attempt to see who would give him the best rate.  He now has 5 inquiries in the last four days.  The worst part is all of them were in different states and two of them have names of companies he can not find any information on.  He regrets doing this and told me he should have just called me initially when his Realtor recommended him to - 5 days ago.  A lesson well learned....