I am a big believer in predicting connections based on data. Henceforth I have consecutively tested as an INFP-T & an INTP on some tests. I was wondering how others test on this forum considering we all have some similar interests and all "found" the site, meaning we at least in a basic way think alike. 

http://www.16personalities.com/

What you tested as the First time: INTP
What you tested as any other time: INFP-T (5 times)
What other tests may have said you are: INTP depending on the FP control question wording.
What you consider youself: IN/TP-T(primary)/FP-T(Secondary)

The link is safe, and credible. If it says anything other than 16personalities RUN AWAY! I work in IT Security, so I can personally tell you URL hijacks happen, and it is impossible to prevent them forever.