myisamchk and empty spaces

Could someone explain if I used myisamchk correctly?

--- SNIP ---
`myisamchk -i weirdtable.MYI`

Checking MyISAM file: weirdtable.MYI
Data records: 1 Deleted blocks: 14
- check file-size
- check record delete-chain
- check key delete-chain
- check index reference
- check data record references index: 1
Key: 1: Keyblocks used: 0% Packed: 0% Max levels: 1
Total: Keyblocks used: 0% Packed: 0%

- check record links
Records: 1 M.recordlength: 197
Packed: 73%
Recordspace used: 93% Empty space: 2045% Blocks/
Record: 1.00
Record blocks: 1 Delete blocks: 14
Record data: 197 Deleted data: 4096
--- SNIP ---

I'm assuming "Empty Space", Delete blocks and Deleted data are bad
things, especially when Empty Space reaches 2045%.

I looked around and assumed I fixed it with this:

`mysql> optimize table weirdtable;`

because the next time I ran `myisamchk -i weirdtable.MYI`, the Empty
Space is at 0%, Deleted data is 0, and Delete blocks is 0.

So, did I do this right? Did I just royally screw up the table? And
hey, does it even matter?

Thanks for your time in reading this.