Introducing my LEGO Parts Guide, which is powered by images exported from LDraw.

[tom alphin]

Nice idea, I actually thought about something similar myself.

Here are few thoughts or ideas have regarding this:

Since this is purely informative rather than a trading platform (like Bricklink etc.) maybe add a little bit more info outside the usual inventory info:

-Material this part is cast in (ABS, PC, MABS, SAN, PP, PE, steel, etc.)
-Official Lego Name, Element IDs, Design IDs
-Has this part ever appeared in a pre-assembly like Minifig torsos? If so are there multiple variants?
-Number and type of connection points
-Which Theme/Sub-Theme was this part introduced with and why?
-Evolution of the part:

• do variants/revisions exist?
  
• if so when was a new one introduced and what is the major difference?
  
• are their parts very close to it, but still not close enough for a variant (1x6x5 brick vs panel for example)
  
• did this part replace an existing part (or got replaced by one), the crocodile for example
  
• does it belong into a kind of 'parts family' especially interesting for hinges
  

-Printed vs unprinted versions, maybe list identified print colors for decorated parts
-Highlight rare colors or gaps where certain colors were unavailable or uncommon, but not now
-Interesting engineering features or explanation of mold oddities
-Associated patents and designers/inventors (it's not as hard to find out as one might think!)
-Other trivia, like Jamie Berard claiming 4733 is internally known as a "Super-Erling"
-List known "Q-part" versions that have been found or identified

Feel free to ask if you any questions regarding this

There's a mix of really good ideas that I think would have widespread utility and interesting but niche ideas in this list.  A few that caught my eye in particular are those that either make people better builders, or help deepen people's knowledge and joy of the LEGO hobby.

• I think that related/replacing parts is useful and I might explore this in the future.
  
• number and type of connection points is definitely interesting since this is literally how LEGO parts go together.
  
• I also happen to love the idea of adding trivia like the Jamie Berard comment - if I could find the source quote I'd totally add that as a comment on that part :-)
  

Thanks again for the ideas, it is a slow laborious process, but I do plan to keep refining it over time!

Sincerely,
---Tom