Yes! I agree with Colin and you will find many warnings here on Rootschat about "submitted" records.
When you look at the search page you will see two headings Community Contributed IGI Community Indexed IGI. Both boxes are ticked, the Community Contributed records are 'submitted' as Colin says by members of the LDS and some records can be purely guesswork, try to cross check with the Indexed records which are transcriptions from the original registers.
You can filter out submitted records by un-checking that box.
Always try to find a second source, other websites do have either transcriptions done by local family history groups or in some cases scanned images of the original registers. Might cost you for a pay to view or a subscription but worth it in the long run. I know which one I would rather trust.
And don't forget Rootschat, many folk have access to all kinds of records, you only have to ask

Having said that the IGI is a very good starting point.
Suey